Pipe-clamp.



No. 762,994. PATENTED JUNE 21, 1904. Y

H. PISHERING.

PIPE CLAMP.

APPLIGATION FILED PEB. 1, 1904.

N0 MODEL.

- fw l 1" e A allel to those of the teeth (t and a.

s UNITEDV STATES Patented June 21, 1994.

PATENT OEEICE.

PIPE-CLAMP.

s-Pncrnfcn'rrolv forming part ef Lettere Patent Ne. 762,994, dated June 21, 1904.

Application filed February 1, 1904-.. Serial No. 191,432. (No model.)

To (1J/Z whom. :It 779,114/ con/00772,.'

Figure l is a plan view of a pipe-clamp embodying my invention, showing it with a pipe clamped in position. Fig. 2 is a side elevation of the same, the full line showing the jaws interlocked and held in place, dotted lines showing the same before they have been interlocked. Fig 3 is an end View looking from the left of Fig. 1. Fig. lis an end view looking from the right of Fig. l. Fig. 5 is a central sectional view taken upon lines X X of Fig. 1. Fig. 6 is a perspective View of the same.

Referring' to the parts, the upper jaw A of the clamp lhas downwardly projecting wedge shaped teeth a and a and wed geshaped faces a2 and a, whose wedges are par- Lower jaw B has upward ly-projecting wedge-shaped teeth 7; and b', corresponding to teeth a and a', to engage faces a2 and a3, and wedge-shaped faces b2 and b3, corresponding with faces L2 and a, to be engaged by teeth t and a. Journaled upon pins O and C in jawA are two swinging arms c and c', between whose forward ends is journaled a roller having eccentrics c2 and c3. rI`he front edge of teeth and L are beveled off to engage the eccentrics, so that when the roller is rotated, which may` be done by engaging nut c4 by a wrench, the jaw A is drawn forward upon jaw B, and the wedges therefore clamp the jaws tightly together. Jaw A and jaw B each has a longitudinal semicircular groove (t4 and L, which register with each other when thc jaws arey afterward.

pipe E, which is to be operated upon. These bushings are made removable, so that different-sizedY bushings may be used to vary the size of the seat for use with different-sized pipes. To facilitate the removal or replacement of these bushings, jaws A and B have longitudinal radial grooves a5, a, b5, and if formed in them, and the bushings have corresponding radial ridges (l upon their circumference to engage the grooves, so that one bushing may be readily drawn out of the jaw and another one inserted in its place.

In order to secure the clamp in place while operating upon the pipe, jaw B has -two longitudinal notches 67 68 formed near its lower edge, which engage flanges f f of ways G, which are secured to the table.

TheeXterior of the clamp is made angularly, so that the same will form a firm seat for a wrench.

In operation a pipe E to be operateeltnpon is inserted between the jaws A and B while they are loose. .Then the arms c and 0' are swung forward and the eccentrics are rotated by means of a wrench engaging the nut c4, which operation draws the jaws down firmly upon the pipe E. The operation, as hereinbefore described, may be performed either be-` fore the 'i clamp is placed in the way F or Then the operation of screwthreading or of otherwise operating upon the pipe is performed. Now should it be desired to insert the pipe in place in a machine-as, for instance, a water-heater-or to iit it in place in the water system of a house the clamp. is left locked together and is removed from the ways F. The jaws then form a convenientseat for a wrench to tit thc pipe in place, after which by loosening up eccentrics c2 and c3 the clampr maybe removed readily from the pipe.

I have shown my invention in the best form known to me; but it is obvious that many mere mechanical changes might be made therein without departing from the spirit or scope of my invention.

What I claim isl. In a pipe-c-lamp the combination of two `jaws having interlocking wedge-shaped faces,

each having a groove registering with a groove in the other and forming therewlth a pipe- IOO seat, and an eccentric journaled upon one of the jaws to engage a seat upon the other and to draw the jaws together substantially as i shown and described.

3. A pipe-clamp consisting of two interlocking jaws formed angularly upon their eX- terior and having longitudinal grooves to form a pipe-seat, means for locking the jaws together, and a fixed way to be removably engaged by the jaws substantially as shown and described.

HENRY FISHERlNG.

Witnesses:

W. F. MURRAY, A. L. WILLIAMS. 

